Tapping element for melting-furnaces.



H. L. HARTENSTEIN. TAPPING ELEMENT FOR MELTING FURNACES. APPLICATION FILED NOV. 19, 1906.

L45, Patented'fiept. 27, 1910.

HERMAN L. HARTENSTEIN, 0F GONSTANTINE, M281 EGAN, ASSIGNOR, BY MESNE AS- SIGNIVIENTS, T0 CONTINENTAL INVESTI-JIEN'IJ CUMEPANY, O1 BUL'UTH, IEINNESQTA,

A CORPORATION OF MINNESOTA.

TAPPING ELEIEENT FOR MELTING-FUR-NACES.

T 0 all whom "it may concern:

Be it known that I, HERMAN L. HARTEN- srnm, a citizen of the United States, residmg at Constantine, in the county of St. Joseph and State of Michigan, have invented certain new and useful Improvements in Tapping Elements for lifelting-Furnaces, of which the following is a full, clear, and exact specification.

This invention relates to tapping elements comprising a tap hole for drawing off the molten material from melting furnaces of any description, but has more especial reference to a tap hole element designed with a view to the special requirements of furnaces employed for melting the materials from which calcium carbid is made, and it has for its primary object to provide an improved tap hole element which will avoid the serious objection or defect of tap holes heretofore used of becoming clogged with the molten material freezing in the discharge mouth thereof.

With a View to the attainment of these ends and the accomplishment of certain other objects, which will hereinafter appear, the invention consists in the features of novelty which will now be described with reference to the accompanying drawings, and more particularly pointed out in the claims.

In the said drawings, Figure 1 1s a vertical sectional view of a part of a melting furnace provided with a tap hole element embodying this invention, the section being taken on the line 11, Fig. 2. Fig. 2 is a front or face elevation thereof, and Fig. 3 is a detail plan view on a small scale.

1 is part of the side wall, and 2 the bottom of the melting furnace. In this side wall is usually placed a. bushing 3 for receiving the tap hole casting, and to this bushing the tap hole element is removably secured so that it may be renewed conveniently when desired.

The tap hole proper is shown at 4, and according to this invention, it is formed in the inner end of an oblong chambered member 5 which fits into the bushing 3 and is formed with a face plate or flange 6 secured to the face of the bushing 3 by a cap screw 7, or other suitable means. This member 5 is formed with a passage or recess 8 having an inclined bottom or floor 9 which extends from the tap hole proper 4 through the face Specification of Letters Patent.

Application filer November 19, 1806.

Patented Sept. 2?, 1910.

Serial No. 343,988.

plate 6. This recess is considerably enlarged above the tap hole so as to leave a liberal vacant space above the stream of molten material that is likely to freeze on the inclined bottom 9. This enlargement above the tap hole also affords room for the introduction of the plug 10 for closing the tap hole at, it being understood that by affording this space or room above the tap hole the plug may be introduced into the recess 8 and the hole 4t closed therewith, and the molten material thereby cut off even with the interior of the furnace, without leaving a stream of the frozen material in the passage between the hole at and the discharge end or mouth of the recess 8. l i ith the device thus constructed, however, should the material freeze in the recess 8 between said points, the frozen portion may be readily broken off flush with the interior of the furnace by simply lifting its outer end in the unoccupied space of the recess 8, it being understood that the frozen portion will break at the softest point, and that is the point where it adjoins the molten material in the furnace. This, of course, could not be done if the size and proportions of the recess or passage 8 were such that the stream discharging through the hole t filled or substantially filled said passage.

lly reference to Fig. 3, it will. be seen that the passage or recess 8 is tapered or inclined not only at the bottom but also at the side walls, so that when the projection of frozen material is lifted and broken off it may be readily withdrawn from the passage.

In order that the invention might be understood by those skilled in the art, the details of this embodiment thereof have been thus specifically described, but

What I claim as new therein and desire to secure by Letters Patent is:

1. In a tapping device for furnaces, a chambered member having a downwardly flaring chamber and adapted to extend through the side of a furnace and having the inner end of the chamber closed by an orificed wall, the orifice being of relatively small diameter as compared with said wall and being located next the lower wall of said chamber, said chamber being of less lateral than vertical diameter.

2. In a tapping device for furnaces, a chambered member adapted to extend through the side of a furnace and having ber being of greater height than width, havthe inner end of the chamber closed by an orificed wall, the orifice being of relatively small diameter as compared with said wall and being located next the lower wall of the chamber, said chamber being of less lateral than vertical diameter and having its lower side sloping downward and outward.

3. In a tapping device for furnaces, a chambered member adapted to extend through the side of a furnace and having the inner end of the chamber closed by an orificed wall, the orifice being of relatively small diameter as compared with said wall and being located next the lower wall of the chamber, said chamber being of less lateral than vertical diameter, having its lower side sloping downward and outward and also having its lateral sides flaring outward.

4. In a tapping device for furnaces, a member adapted to extend through the side of a furnace, said member being provided with an internal chamber extending to a point short of the inner end of said member, said inner end being provided with a relatively small tapping orifice located next the lower wall of said chamber and said chamber being of greater height than width and having its lower side sloping downward and outward.

5. In a tapping device for furnaces, a member adapted to extend through the side of a furnace, said member being provided with an internal chamber extending to a point short of the inner end of said member, said inner end being provided with a relatively small tapping orifice located next the lower wall of said chamber and said chamber being of greater height than width and having its lower side sloping downward and outward, and also having its lateral sides flaring outward.

6. In a tapping device for furnaces, a member adapted to extend through the side of a furnace, said member being provided with an internal chamber extending to a point short of the inner end of said member, said inner end being provided with a relatively small tapping orifice located next the lower wall of said chamber and said chaml l l ing its lower side sloping downward and outward and having its lateral sides also fiaring outward, said member being provided with laterally extending flanges at its outer end.

7. A furnace provided with a bushing in one wall, said bushing being provided with an outward spout, and a chambered tapping member fitting said bushing and secured thereto, the chamber of said member being of greater height than width and having a downwardly and outwardly sloping lower side extending to said spout and lateral sides also flaring outward.

S. In a device for the purpose described, the combination of a furnace, a bushing fitted in the side wall thereof, a member comprising a fin-lili'e projection fitted in said bushing, a fiange secured to the face of the bushing, a passage leading through the face of the flange, and an aperture, of less depth or vertical diameter than each end of said passage, for the discharge of molten material from the furnace into the passage, the bottom wall of the passage coinciding with the base of the aperture.

9. In a device for the purpose described the combination of a furnace wall and bottom or hearth, a bushing inserted in and fixed to the furnace wall, a plug introduced into the bushing and having an opening at its inner end contiguous to the said bottom or hearth and a passage leading outwardly and downwardly from said opening through the outer end of the plug, said passage being higher at its inner end than the said opening but the lower side or bottom of said passage being even with the said opening and extending directly therefrom, and means for detachably securing said plug to the said bushing.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, on this 16th day of November A. D. 1906.

HERMAN L. HARTENSTEIN.

IVitnesses FRANCIS A. HOPKINS, CHAS. H. SEEM. 

